baber/WOPTO huggingface dataset:
Patent GB-1149966-A (GB)
Title: Improvements in liquid propellant rocket propulsion equipment
IPC: F02K9/64
Filed: 1966-05-12
Abstract: 1,149,966. Rocket engines; propellant supply systems. BOLKOW G.m.b.H. May 12, 1966 [May 15, 1965], No.21162/66. Heading F1J. The invention relates to a rocket propulsion unit for use with liquid propellants, in which one of the propellants enters the combustion chamber in vaporized form, or in which a partly precombusted mixture of several propellants enters the combustion chamber in gaseous form, the other propellant being discharged into the flow of vaporized propellant or gas mixture through an injection device disposed in the combustion chamber. The injection device comprises a series of conduits disposed in the form of a grid, the conduits having injection orifices for the liquid propellant. The rocket unit shown in Fig. 2 comprises a main combustion chamber and propulsion nozzle 1 and a pre-combustion chamber 2, the propellants being liquid hydrogen and liquid oxygen which are supplied by pumps 6, 6a and 8 respectively, the pumps being driven by a turbine 5 disposed adjacent the pre-combustion chamber 2. Liquid hydrogen enters the two-stage pump at 10 and discharges at 12 to the cooling system 13 disposed around the combustion chamber and nozzle assembly 1. A portion of the vaporized hydrogen passes into the pre-combustion chamber 2 through passages 14, 15, 16 where it burns with liquid oxygen. The remaining portion of the vaporized hydrogen passes through passage 17 to mix with the gases discharging from the precombustion chamber, the gas mixture then passing to the turbine 5, the mixture discharging from the turbine passing through the injector assembly 9 to the main combustion chamber. Liquid oxygen delivered by the pump 8 passes to conduits 19, 20, that from conduit 19 passing through ducts 21, 22, 23, 24 into the pre-combustion chamber 2 as described above, while that from conduit 20 passes from manifold 28 and ducts 25 into the radial ducts 29 of the propellant injector assembly 9. The assembly 9 comprises annular manifolds 9a and radial ducts 29 disposed in the form of a grid, Fig.2a, the manifolds 9a having injection orifices 26 through which the liquid oxygen is discharged into the gaseous mixture discharging from the turbine 5 passing between the manifolds 9a and radial ducts 29. Other arrangements of the injector assembly are described. In Fig.4 the assembly comprises a plurality of perforated radial ducts projecting inwardly from an outer ring manifold. In Fig. 5 a plurality of ducts of helical form extend inwardly from an outer ring manifold, while in Fig. 6 two groups of parallel ducts project across the combustion chamber from the ring manifold in interdigitated manner.
Patent GB-1509089-A (GB)
Title: System controlling a machine tool by sensing and controlling the vibration and lateral force on a cutting tool
IPC: B23Q17/12
Filed: 1975-05-19
Abstract: 1509089 Automatic control of vibration and force WESTINGHOUSE ELECTRIC CORP 19 May 1975 [31 May 1974] 21162/75 Heading G3R A programmed reference signal for the feedrate of a machine tool is combined with signals representing vibration and lateral force on the tool respectively, derived from a single transducer mounted in association with the tool. In the embodiment a Piezo-electric crystal 26 is mounted in a rotating milling tool holder, also Fig. 1 (not shown) and connected through slip rings and amplifier 62 to high and low pass filters 64, 69 which derive the vibrational and force components respectively as positive analogue voltages which are compared at 84, 112 with negative voltages -Vo, -Fo representing the permissable limits. When these limits are exceeded the resulting positive voltages are inverted and added algebraically to a programmed feed voltage to produce an actual feed signal which thus represents a desired feed modified to prevent vibration and bending forces exceeding the set limits.
Patent GB-986014-A (GB)
Title: Packing for gland type seals
Inventor: BLACKHALL DOUGLAS JAMES WHITEH
IPC: F16J15/20
Filed: 1962-06-01
Abstract: A rubber sealing ring is treated with sulphuric acid or by chlorination in order to improve its sliding properties.  The ring is placed in either concentrated sulphuric acid or a solution of chlorine in a solvent and after removal therefrom is washed in running water.
Patent GB-1089888-A (GB)
Title: Improvements relating to the housing of printed or other circuit boards
Inventor: LEWER ERIC HARRY
IPC: H05K7/14
Filed: 1965-05-19
Abstract: 1,089,888. Mounting electrical equipment. ALFRED IMHOF Ltd. May 18, 1966 [May 19, 1965], No. 21192/65. Heading H1R. In a structure for supporting printed and other circuit boards of the kind comprising a pair of spaced parallel plates 10 and pairs of grooved guide members 12 of resilient material mounted opposite one another on plates 10, each guide member is provided with two integral pegs 14 of frusto-conical form which engage in selected holes 11, which are provided in coordinate array in each plate 10, to secure it thereto. A connector retaining block 18 is also secured by an integral peg 20 to a plate 10 adjacent one end of each guide member, the blocks being formed with recesses to receive edge connectors or, as shown, metal connector holders 28. A plurality of guide members 12 may be placed in line, abutting or spaced apart, to receive a long circuit board. Each guide member 12 is formed at one end with a semicircular projection, and at the other end with a complementary recess; the retaining blocks 18 comprise similar projections. Guide members 12 and retaining blocks 18 have recesses in their surfaces which abut plates 10 to facilitate their removal.
Patent GB-863171-A (GB)
Title: Amino acid derivatives
IPC: C09B11/04
Filed: 1958-07-21
Abstract: The invention comprises the benzyl and trityl esters of N-trityl asparagine and the diethylamine salt of N-trityl L-glutamine, and their preparation.  N-Trityl asperagine trityl ester is prepared by reacting L-asparagine with trityl chloride in the presence of triethylamine; N-trityl asparagine benzyl ester by partial hydrolysis of N-trityl aspartic acid dibenzyl ester and reaction with ammonia in the presence of dicyclohexylcarbodiimide; and the diethylamine salt of N-trityl L-glutamine by reaction of N-trityl L-glutamic acid g -monomethyl ester with ammonia and treatment of the product with diethylamine.
Patent GB-694774-A (GB)
Title: Improvements in or relating to apparatus for controlling the frequency of a mechanically oscillatory member
Inventor: LAW HARRY BERNARD
IPC: G04D7/12
Filed: 1949-08-15
Abstract: 694,774. Automatic control of mechanical vibrations. POSTMASTER GENERAL. April 25, 1951 [Aug. 15, 1949], No. 21238/49. Class 38 (iv). [Also in Group XVIII] The oscillation frequency of a mechanicallydriven balance wheel is continuously corrected to a predetermined value by deriving an error signal dependent upon the phase difference between the oscillation of the wheel and a standard frequency voltage. The correction may be made by electromagnetic loading of the balance wheel or altering the effective length of the hair-spring. Error signal.-(a) Contacts E, F on the balance-wheel which close momentarily during the oscillation may be arranged to " gate " the standard frequency source SF to charge a capacitor, Fig. 2. The voltage across the capacitor will depend on the phase difference. (b) The contacts may be arranged to produce a pulse P which is superimposed on the standard frequency SW, Fig. 3, so that the peak rectified value varies with the phase difference. The derived voltages may be amplified and used to electromagnetically load the balance wheel as illustrated in Fig. 7 (not shown). Contact mechanism, Fig. 4, is arranged to make a short contact, e.g. 100 microseconds on forward swings only of the balance. Balance-wheel A, driven by escape-wheel B and lever C, carries on its rim a platinum pin E adapted to contact a platinum arm F pivoted in jewelled bearings G and urged against an insulating stop I by a weak hair-spring Hand having a natural period of vibration of the same order as that of the balance-wheel. As the balance swings in a clockwise direction the pin E strikes and makes contact with arm F, which bounces away to the back-stop J and is retained on return by an insulating lock K on the lever C so that no contact is made by pin E on the return swing of the balance-wheel. As the balance makes its next forward swing arm C moves so that lock K releases the arm F which returns to the stop I. Correcting mechanism, Fig. 6.-A 120 degrees soft iron sector N on the balance-wheel passes between similarly shaped polepieces M of an electromagnet having a polarizing winding W2 and a control winding W1. The soft iron sector N is arranged to line up with the polepieces in the neutral position so that (within the limits of 120 degrees swing either side of neutral) the magnetic restoring force assists the hairspring and increases the rate of the balance-wheel. The soft iron sector or the bias winding may be replaced by a permanent winding. Alternatively an electromechanical device may be arranged to control the position of a pair of pins gripping the hairspring.
Patent GB-281369-A (GB)
Title: Improvements relating to revolving spindle metal-cutting and like machines
IPC: B23B47/06
Filed: 1926-08-30
Abstract: 281,369. Asquith (1920), Ltd., W., Feather, G., and Howden, P. Aug. 30, 1926. Drawings to Specification. Driving machines.-Revolving-spindle metalcutting rnachines such as radial and other drilling- machines, boring-machines, milling-machines, and the like are driven by electric motors fed by variable-voltage generators, means being provided such as series resistances or potentiometer resistances to vary the strength of field in both the generator and the motor for the purpose of speed variation. Switches or equivalent electrical means are provided for reversal. For radial drilling-means an electric drive of the above kind replaces the customary vertical driving shafts and variable ratio gears.
Patent GB-764857-A (GB)
Title: Improvements in instantaneous consumption indicator installations for automobile vehicles having an internal combustion engine
Inventor: MENNESSON ANDRE LOUIS
IPC: G01F9/00
Filed: 1955-07-22
Abstract: 764,857. Fuel consumption indicators. SOC D'APPAREILS DE CONTROLE D'EQUIPEMENT DES MOTEURS S.A.C.E.M. July 22, 1955 [.July 31, 1954], No. 21311/55. Class 106 (3). In a fuel consumption (quantity/distance) meter of the kind wherein the pressure in the induction system downstream of the throttle is indicated on a gauge, means are provided to compensate for variations in the gear transmission ratio or in the richness of the fuel fed to the engine so that the suction pressure indicated is always proportional to the consumption. The suction pressure is measured at a gauge 5, Fig. 1, connected to the induction manifold 2 by a pipe 6 passing through a chamber 14 communicating via a spring-loaded valve 17 with a cylinder 15 having a calibrated orifice 20, the valve stem 16 being operated by an abutment 22 on the gear change mechanism 10, 13. On altering the transmission ratio by changing gear, the valve 17 is lifted from its seating so that the pressure transmitted to the gauge is altered by means of the leak through the orifice 20 to maintain the required proportionality of the indicator. Further valves controlling additional orifices may be provided for each gear ratio. Where hydraulic or electromagnetic gear change mechanisms are provided the valves 17 may be similarly operated. In Fig. 5, petrol and air are fed from a carburetter by means of a tube 24 into the induction feed, air being drawn through a passage 29 and petrol through a jet 32 from the float chamber 27. This type of carburetter has valve means 31, 32 controlled by a diaphragm 33 which open under the influence of the spring 31 when the engine suction falls in order to increase the richness of the fuel mixture supplied to the engine. To maintain proportionality of the consumption indicator readings such a fall in the suction pressure also causes movement of the valve stem 16 by means of a pressure-sensitive diaphragm 40 spring controlled and communicating with that manifold by a tube 38.
Patent GB-886589-A (GB)
Title: Method of and apparatus for drying corrugated paper board
Inventor: CASSADY ROBERT THEOBALD
IPC: F26B13/10
Filed: 1960-06-17
Abstract: 886,589. Drying corrugated paper board. LANGSTON CO., SAMUEL M. June 17, 1960, No. 21321/60. Class 34(1) A process of drying corrugated paper board containing adsorbed moisture comprising the steps of advancing the board at a substantially constant linear speed relative to a series of heated platens, maintaining the platens at a substantially constant temperature during advancement of the board and controlling the degree of heat acting on the advancing board by periodically varying the relative spacing of the board and at least one of the platens. Freshly glued, corrugated paper board 1, Fig. 1, is dried and the glue heat-set in a process comprising the steps of advancing the board through a heating section in contact with a series of platens 6 which are heated as by steam to a temperature in excess of that required for drying the board, selected platens of the series being movable out of contact with the board to prevent over-heating whilst moving over the remaining platens. The board is held in sliding contact with the platens by a belt 7 having adjustable rollers 10. The platens, which are arranged in groups of four, are adjusted by hydraulic cylinders regulated by a manually-operated electrical control system in accordance with changing temperature requirements. Each group is mounted for joint actuation by pairs of opposed slideways 13, Fig. 3, formed in side plates 3 of the heating section by vertical motion given by pairs of hydraulic cylinders 17 and piston rods 18 mounted on the frame structure. Hydraulic fluid is supplied to and exhausted from the cylinders by conduits 23, 24, Fig. 2, respectively, simultaneously to the set of four cylinders of any selected group of platens from a common reservoir having a motor-driven hydraulic pump and each group has an individual solenoid-operated reversing valve for connecting the reservoir to conduits 23, 24. Steam for the platens is supplied to and exhausted from the platens by conduits 31, 32 respectively from headers 33, 34 which are divided into sections, one section for each group and flexibly joined by connections 37 to allow vertical movement of separate sections. Each group of platens is movable relative to idler rollers 40 journalled at 41 to the side plates 3 between the platens to support the board when the platens are lowered. Adjustable stops 44 are mounted on the plates 3 to engage the platen structure in its elevated position to establish accurately its operating plane. In a modification the platens 6 are rigidly mounted on stationary side rails 88, Fig. 12, and the corrugated paper board 1 is raised or lowered relative to the top surface 25 of the platens by the idler rollers 40 journalled in guide blocks 86 which are slidable vertically in guide blocks 87 formed in the slide plates 3. Each block 86 has a hydraulic cylinder 17 and piston rod 18 actuated by the conduits 23, 24 communicating with the reversing valves of the control system.
Patent GB-395880-A (GB)
Title: Improvements in and relating to the manufacture of moulding substances
IPC: C08G12/08
Filed: 1932-07-28
Abstract: Moulding substances are manufactured from the ingredients of aromatic amine-aldehyde resins in a single condensation process by working the resin-forming components and filling materials, with or without colouring material and plasticizing agents, in the absence of solvents on a heated rolling mill, with or without previous mixing. Condensation and polymerization accelerators may be added.  In examples: (1) wood meal, paraformaldehyde, aniline, phthalic acid and colouring matter are worked in a rolling mill at 120-140 DEG  C. to produce compacted rolled sheets which may be further worked on the roller; (2) wood meal, b -naphthylamine (or a - or a mixture of a - and b -naphthylamine), crotonaldehyde, benzoic acid and colouring material are similarly worked until sheet consistency is attained and the product is pulverized; other suitable contact substances are chloracetic acid and polybasic organic acids, or accelerators which are also colouring materials or plasticizers; (3) wood meal and paraformaldehyde are mixed in a mixing mill and then worked with aniline on a roller at a temperature increasing slowly from 80 DEG to about 150 DEG  C.  The Specification as open to inspection under Sect. 91 comprises also the carrying out of the process of example (3) in several stages.  This subject-matter does not appear in the Specification as accepted.
Patent GB-597036-A (GB)
Title: An improved telescopic strut or shock absorber
IPC: B62K25/08
Filed: 1945-12-03
Abstract: 597,036. Motor cycle forks. DOWTY EQUIPMENT, Ltd., BURKE, P. W., MORRIS, R. P. W., and WILLITT, A. A. J. Dec. 3, 1945, No. 21385/44. [Class 136 (iii)] [Also in Group XXXII] A motor-cycle fork consists of a pair of struts each comprising telescoping tubes 4, 7 defining an oleopneumatic chamber of variable volume (see Group XXXII) the tubes 4 being interconnected by cross braces 5, 6 while the tubes 7 mount the front-wheel spindle 8. One of the struts embodies a brake torque anchorage connection with the brake gear. The air chambers at the upper ends of the tubes 4 intercommunicate through a duct behind the cross brace 5 and are inflated through a valve 9.
Patent GB-987291-A (GB)
Title: Electrical communication apparatus
IPC: H04L12/403
Filed: 1962-06-04
Abstract: 987,291. Selective signalling. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 4, 1962 [June 28, 1961], No. 21386/62. Drawings to Specification. Heading G4H. The description is similar to that in Specification 987,293 which is referred to but the sequencing arrangements of the mulcoms (field stations), to which the claims relate, differ. As described each mulcom will respond after an associated characteristic delay after the previous mulcom in the sequence stops transmitting, and it is also arranged that each mulcom can respond only once in each cycle of the sequence. Thus if any mulcom does not respond when it ought to (due to a fault) the next mulcom in the sequence will respond. Specification 987,292 also is referred to.
Patent GB-444568-A (GB)
Title: Armour
IPC: F41H5/04
Filed: 1934-07-21
Abstract: 444,568. Armour. ADELSOHN, A. H., 10, Grevturegaten, Stockholm. July 21, 1934, No. 21391. [Class 113 (ii)] Armour comprises at least three plates 1 disposed one behind the other and leaving clear intermediate spaces 2. The individual plates are so spaced that, on impact of a projectile the forward plate is deflected back on the adjacent succeeding plate on which it bears with a greater supporting surface than the impact point of the projectile, the second plate being further deflected back on the third and so on. The plates are welded at their edges where they are provided with spacing-members 4. Alternatively, the plates may be welded. The plates may be bulged at their centres to produce the desired spacing.
Patent GB-1535867-A (GB)
Title: Safety belt rewinding mechanism
IPC: B60R22/44
Filed: 1977-05-23
Abstract: 1535867 Seat belts BRITAX (WINGARD) Ltd 23 May 1977 [24 May 1976] 21397/76 Heading A3V A seat belt retractor comprises a reel to store the belt, means e.g. a spring which is biassed or tensioned to retract an extended belt, friction means to diminish the bias exerted by the retraction means when the belt is being worn and means to decouple the friction means from the retraction means to fully restore the retraction force. As shown a spring biassed belt reel is connected to a gear 1 drivingly connected with a worm gear 3. When the belt is pulled out gear 1 rotates anticlockwise and moves gear 3 to the left until its shaft is supported by indent 6 whereafter gear 3 is rotated thus rotating a threaded shaft 9 along which a nut 8 held against rotation is driven. At full retraction nut 8 is closely adjacent a flange 7 on gear 3. With the slight retraction associated with fitting the belt gear 1 rotates clockwise to shift flange 7 of gear 3 into contact with nut 8. Further retraction then involves a frictional drag force caused by flange 7 bearing against nut 8. This continues until gear 3 has moved so far to the right that the end 11 of shaft 9 engages the end of the blind hole 10 and nut 8 then moves away from flange 7, the frictional force thus being removed for the remainder of the retraction.
Patent GB-744743-A (GB)
Title: Improvements in or relating to apparatus for the continuous measurement of objects of great length
IPC: G01B5/04
Filed: 1951-09-11
Abstract: 744,743. Measuring continuous lengths of materials. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., BRICE, P. J., and MACDONALD, H. A. Sept. 11, 1952 [Sept. 11, 1951], No. 21414/51. Class 42 (2). Apparatus for the continuous measuring of an object of great length drawn or forced through the apparatus by an outside force comprises an endless belt having a straight portion, means for maintaining the object during passage in contact with the said straight portion, a measuring wheel embraced over a substantial arc by the belt, and booster means operatively connected with the belt and arranged to provide a driving force sufficient to overcome the internal running resistance of the apparatus to movement of the belt. As shown, a cable 28 to be measured is drawn by a reeling device between vertical guide rollers 38 and over a horizontal portion 20 of an endless belt 17. The cable drives belt 17 with which it is kept in contact over portion 20 by the pressure of grooved idler rollers 27 in a housing 26. The inner surface of belt 17 is provided with teeth 18 which engage sprocket wheels 15, 16, a toothed measuring wheel 22 driving a counting mechanism 24, and a toothed jockey wheel 23. The belt is supported along portion 20 by idler sprocket rollers 21. Located in advance of belt 17 is a booster wheel 29 against which cable 28 is pressed by a roller 34 on a weighted arm 35. Wheel 29 is connected to wheel 22 by a chain 33 and sprockets 31, 32 and has a slightly smaller diameter than wheel 22 so that it rotates with a peripheral speed about 99 per cent of that of wheel 22. Alternatively, wheel 29 may be of the same diameter as wheel 22 and be positively geared thereto so as to rotate with a slightly lower peripheral speed. Wheel 29 is slightly tapered so that by relative lateral adjustment between the wheel and the cable the effective diameter and peripheral speed of the wheel can be varied. Since belt 17, and hence also the periphery of wheel 22, move at the speed of the cable, there will be a slight slip between the cable and wheel 29; the cable thus exercises a driving effect on wheel 29 which is transmitted to wheel 22 and is such as to neutralize internal frictional losses of the measuring wheel and belt assembly and thereby minimize slip between the cable 28 and the belt 17. The braking effect of wheel 22 on the cable keeps the latter taut during measurement. In an alternative embodiment the measuring wheel is located at one end of the horizontal portion of the belt which is arranged to embrace the measuring wheel over an arc of about 180 degrees. The booster wheel 29 and its associated parts may be replaced by a constant-torque electric motor driving the measuring wheel, the torque provided by the motor being arranged to be such as to overcome the internal frictional resistance of the measuring wheel and belt assembly.